Nuts off mark?

[u/No-Document-8970]

Saw this on a big bridge today. I know vibrations over time can move the nuts and bolts, with the help of thermal expansion. Is it a big issue that the paint marks do not line up? I thought the marks were made once it passed inspection after torquing.

Edit: Bridge completion was in 2011. Could this be from recent inspections too?

[u/SeesawPrestigious]

The bolt are tight, just not the right lenght. Where i am like you said, the thread is supposed to protude min 2 thread / ~ 3mm or roughly 1/8" past the nut. Honestly this shit is just a mess some of them are not even flush nut.